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The present study is aimed at describing scrotal collections observed at ultrasonography and magnetic resonance imaging. The authors describe the main features of hydrocele, hematocele and pyocele, as well as the most common causes, clinical manifestations and associated diseases, with a brief review of the embryology and anatomy of the scrotum. Collections are frequently found in the evaluation of the scrotum, which is often performed on an emergency basis, and in most cases can be differentiated by means of imaging studies. With the consolidation of magnetic resonance imaging as the method of choice complementary with ultrasonography, the authors also describe magnetic resonance imaging findings of scrotal collections as well as the situations where such method is indicated.

Leiomyosarcoma of the inferior vena cava is an extremely rare tumor that is characterized by a poor prognosis and nonspecific symptoms, a fact that may delay the diagnosis for several years. The only therapeutic modality proven to prolong the survival of patients is total surgical resection of the tumor. In this study, the authors report the case of a 50-year-old patient with a diagnosis of leiomyosarcoma of the inferior vena cava, affecting the middle and distal thirds, who was submitted to surgical treatment.

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do Triângulo Mineiro). 2. Acadêmica do sexto ano de medicina da UFTM. 3. Professor responsável pela disciplina de Cirurgia do Aparelho Digestório da UFTM. 4. Mestrado em Anatomia Patológica e Professora assistente da Disciplina de Patologia Especial. Recebido em 08/03/2006 Aceito para publicação em 15/04/2006 Conflito de interesse: nenhum Fonte de financiamento: nenhuma Trabalho realizado na Universidade Federal do Triângulo Mineiro (UFTM). AGRADECIMENTO Agradecemos à professora Dra. Sheila Jorge Adad, pela contribuição na descrição anátomo-patológica da peça cirúrgica. Figura 2-Fotomicrografia do leiomiossarcoma mostrando as células fusiformes atípicas, organizadas em fascículos longos. Notar mitose no centro do campo (seta). (HE-400x).